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1.2 1.5 30

Reflection

Material: n1<n2n_1 \lt n_2

Reflexion: α1=α2\alpha_1 = \alpha_2
Fraction: sin(α)sin(β)=n2n1=c1c2=λ1λ2\frac{\sin(\alpha)}{\sin(\beta)}=\frac{n_2}{n_1}=\frac{c_1}{c_2}=\frac{\lambda_1}{\lambda_2}